Key ring



FIG. 1 is a left front perspective view of a key ring showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a right front perspective view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a top plan view thereof. 

The ornamental design of a key ring, as shown and described. 